CN103573210A - Quick drill composite pipe bridge plug - Google Patents

Abstract

Translated fromChinese

本发明提供了一种快钻复合插管桥塞，属于石油行业采油采气领域。本发明包括中心管(1)以及从上至下依次套装在中心管(1)外壁上的推力环(2)、上卡瓦组件、胶筒组件、下卡瓦组件和下接头(9)；所述上卡瓦组件与所述下卡瓦组件相对设置，所述胶筒组件安装在所述上卡瓦组件和下卡瓦组件之间；所述中心管(1)为具有轴向方向通孔的管状结构；在所述中心管(1)的通孔中插有插管。本发明采用增强树脂复合材料，并设有中心通道，配合插管实现了上部封堵，并可双向锚定、双向承压，实现了化堵、分层压裂、分堵等特殊工艺，保证了施工管柱的安全性，而且在施工完毕后可方便磨铣钻除，进而防止造成套管损坏。

The invention provides a fast-drilling composite intubation bridge plug, which belongs to the field of oil and gas recovery in the petroleum industry. The invention comprises a central pipe (1), a thrust ring (2), an upper slip assembly, a rubber cartridge assembly, a lower slip assembly and a lower joint (9) which are sequentially fitted on the outer wall of the central pipe (1) from top to bottom; The upper slip assembly is arranged opposite to the lower slip assembly, and the rubber cartridge assembly is installed between the upper slip assembly and the lower slip assembly; the central pipe (1) has a The tubular structure of the hole; a cannula is inserted in the through hole of the central tube (1). The invention adopts reinforced resin composite material, and is equipped with a central channel, which realizes the upper part of the plugging with the intubation, and can be anchored in two directions and bear pressure in two directions, and realizes special processes such as plugging removal, layered fracturing, and separate plugging, ensuring This ensures the safety of the construction pipe string, and it can be conveniently milled and drilled after the construction is completed, thereby preventing casing damage.

Description

Translated fromChinese

一种快钻复合插管桥塞A fast-drilling composite intubation bridge plug

技术领域technical field

本发明属于石油行业采油采气领域，具体涉及一种快钻复合插管桥塞，主要用于井筒内各油(气)层段的分隔。The invention belongs to the field of oil and gas recovery in the petroleum industry, and in particular relates to a quick-drilling composite intubation bridge plug, which is mainly used for separating various oil (gas) intervals in a wellbore.

背景技术Background technique

油田井下采用封隔器进行井筒内各油(气)层段的分隔，对于分层压裂、化堵等作业，由于存在砂埋、水泥凝固等风险，导致封隔器无法解封，为了降低风险，通常采用可钻式桥塞封隔器丢手在井下，再下插管工具实现插入对接密封，施工完毕后，起出插管再下钻铣管磨掉桥塞。Downhole packers are used in oilfields to separate the oil (gas) intervals in the wellbore. For operations such as layered fracturing and plugging removal, the packer cannot be unsealed due to risks such as sand burial and cement solidification. Risk, the drillable bridge plug packer is usually used to drop it downhole, and then the intubation tool is inserted to realize the butt joint seal. After the construction is completed, the intubation is pulled out, and the drilling and milling pipe is used to grind off the bridge plug.

目前的可钻桥塞通常采用球墨铸铁、黄铜等材料，一方面保证桥塞封隔器密封锚定的可靠性，另外还要满足施工后顺利钻铣的需要。但铸铁材料钻铣仍然较难，钻铣周期较长，很容易将套管钻铣破损，引起工程事故。比如专利号为99211381的专利公开了一种可钻式桥塞，其主体采用球墨铸铁等可钻金属材料，可钻性差，且无内部通道，只可用于底部封堵。专利号为200320131681的专利公开了一种两用挤注型可钻式桥塞，采用滑套投球实现冲砂洗井及挤注水泥浆作业，其主体采用球墨铸铁等可钻金属材料，可钻性差。专利号为200520105699的专利公开了一种可取可钻高压桥塞，其可以打捞解封，解封遇阻时可以钻铣，其主体采用球墨铸铁等可钻金属材料，可钻性差，且无内部通道，只可用于底部封堵。The current drillable bridge plugs are usually made of ductile iron, brass and other materials, on the one hand to ensure the reliability of the sealing and anchoring of the bridge plug packer, and on the other hand to meet the needs of smooth drilling and milling after construction. However, drilling and milling of cast iron materials is still difficult, and the drilling and milling cycle is long, which can easily damage the casing during drilling and milling, causing engineering accidents. For example, Patent No. 99211381 discloses a drillable bridge plug whose main body adopts drillable metal materials such as ductile iron, has poor drillability, and has no internal passage, so it can only be used for bottom plugging. Patent No. 200320131681 discloses a dual-purpose squeeze-injection drillable bridge plug, which uses sliding sleeves to throw balls to realize sand flushing, well flushing and cement slurry injection operations. The main body is made of drillable metal materials such as ductile iron, which has poor drillability. . The patent No. 200520105699 discloses a desirable drillable high-voltage bridge plug, which can be salvaged and unsealed, and can be drilled and milled when unsealed. channel, only available for bottom plugging.

国外在页岩气开发过程中应用快钻电缆桥塞，实现多级分段压裂，它采用树脂复合材料，可以保证快速钻除。但由于它没有内部通道，无法配合插管工艺，满足不了安全化堵、防砂等工艺的要求。In foreign countries, fast-drilling cable bridge plugs are used in the development of shale gas to realize multi-stage and segmental fracturing. It uses resin composite materials to ensure rapid drilling and removal. However, because it has no internal channel, it cannot cooperate with the intubation process, and cannot meet the requirements of safe plugging, sand control and other processes.

发明内容Contents of the invention

本发明的目的在于解决上述现有技术中存在的难题，提供一种快钻复合插管桥塞，提高桥塞的可钻性，保证化学堵水、注水泥、防砂等作业的安全。The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and provide a fast-drilling composite intubation bridge plug, which improves the drillability of the bridge plug and ensures the safety of chemical water blocking, cement injection, sand control and other operations.

本发明是通过以下技术方案实现的：The present invention is achieved through the following technical solutions:

一种快钻复合插管桥塞，包括中心管1以及从上至下依次套装在中心管1外壁上的推力环2、上卡瓦组件、胶筒组件、下卡瓦组件和下接头9；A fast-drilling compound intubation bridge plug, including a central tube 1, a thrust ring 2, an upper slip assembly, a rubber cartridge assembly, a lower slip assembly, and a lower joint 9 that are sequentially set on the outer wall of the central tube 1 from top to bottom;

所述上卡瓦组件与所述下卡瓦组件相对设置，所述胶筒组件安装在所述上卡瓦组件和下卡瓦组件之间；The upper slip assembly is arranged opposite to the lower slip assembly, and the rubber cartridge assembly is installed between the upper slip assembly and the lower slip assembly;

所述中心管1为具有轴向方向通孔的管状结构；The central tube 1 is a tubular structure with a through hole in the axial direction;

在所述中心管1的通孔中插有插管。A cannula is inserted into the through hole of the central tube 1 .

所述胶筒组件采用橡胶材料，所述中心管1、推力环2、上卡瓦组件、下卡瓦组件和下接头9均采用增强树脂复合材料。The rubber cartridge assembly is made of rubber material, and the center pipe 1, thrust ring 2, upper slip assembly, lower slip assembly and lower joint 9 are all made of reinforced resin composite material.

所述增强树脂复合材料采用E玻璃纤维、S-1玻璃纤维或S-3玻璃纤维材料。The reinforced resin composite material adopts E glass fiber, S-1 glass fiber or S-3 glass fiber material.

所述上卡瓦组件包括上卡瓦3和上卡瓦座4；所述下卡瓦组件包括下卡瓦和下卡瓦座；所述胶筒组件包括两个边胶筒5以及夹在两个边胶筒5之间的中胶筒6；The upper slip assembly includes anupper slip 3 and an upper slip seat 4; the lower slip assembly includes a lower slip and a lower slip seat; the rubber cartridge assembly includes twoside rubber cartridges 5 and A middle rubber tube 6 between theside rubber tubes 5;

在所述中心管1外壁的上端设有台阶，所述推力环2的上端面卡在所述台阶处，所述推力环2的下端面与所述上卡瓦3的上端面接触，所述上卡瓦3的下端与所述上卡瓦座4上端的椎体斜面配合，所述上卡瓦座4的下端与一个边胶筒5的上端面接触，所述下卡瓦座的上端面与另一个边胶筒5的下端面接触，所述下卡瓦座下端的椎体斜面与所述下卡瓦的上端配合，所述下卡瓦的下端面与所述下接头9的上端面接触。A step is provided on the upper end of the outer wall of the central tube 1, the upper end surface of the thrust ring 2 is stuck at the step, the lower end surface of the thrust ring 2 is in contact with the upper end surface of theupper slip 3, the The lower end of theupper slip 3 cooperates with the inclined surface of the vertebral body at the upper end of the upper slip seat 4, the lower end of the upper slip seat 4 contacts the upper end surface of aside rubber tube 5, and the upper end surface of the lower slip seat In contact with the lower end surface of the otherside rubber tube 5, the vertebral inclined surface at the lower end of the lower slip seat cooperates with the upper end of the lower slip, and the lower end surface of the lower slip is in contact with the upper end surface of the lower joint 9 touch.

所述上卡瓦3和下卡瓦的外表面上均设有单向牙齿，使上卡瓦3和下卡瓦只可以沿轴向方向单向运动，不能回退，从而实现自锁功能。The outer surfaces of theupper slip 3 and the lower slip are provided with one-way teeth, so that theupper slip 3 and the lower slip can only move in one direction along the axial direction and cannot be retracted, thereby realizing the self-locking function.

所述上卡瓦3和下卡瓦分别通过位于其外表面上的两个箍环7固定在中心管1上。Theupper slip 3 and the lower slip are respectively fixed on the central pipe 1 through two hoops 7 located on their outer surfaces.

所述下接头9通过粘胶固定于中心管1的下端，并通过固定销8加固固定；所述固定销8同时采用粘胶固定，防止其脱落。The lower joint 9 is fixed on the lower end of the central tube 1 by glue, and is reinforced and fixed by the fixing pin 8; the fixing pin 8 is fixed by glue at the same time to prevent it from falling off.

所述插管为管状结构，其上部设有油管扣，下部的外表面上设有多道密封圈槽；在所述密封圈槽中装有密封圈；所述插管通过所述密封圈和所述中心管1的内壁配合实现密封；快钻复合插管桥塞以下的流体可通过插管流入或流出。The intubation tube is a tubular structure, the upper part of which is provided with a tubing buckle, and the outer surface of the lower part is provided with a plurality of seal ring grooves; a seal ring is installed in the seal ring groove; the intubation tube passes through the seal ring and the The inner wall of the central tube 1 cooperates to realize sealing; the fluid below the bridge plug of the quick-drill composite intubation can flow in or out through the intubation.

与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:

(1)本发明快钻复合插管桥塞可用于化堵管柱，可将桥塞坐封于封堵层，通过插管向桥塞下封堵层内挤注水泥，一旦水泥在井筒内凝固，可方便提出油管和插管，再钻铣掉井筒内的桥塞和水泥，从而避免“插旗杆”的大修事故；(1) The fast-drilling composite intubation bridge plug of the present invention can be used to remove the plugging pipe string, and the bridge plug can be set and sealed in the plugging layer, and the cement can be injected into the plugging layer under the bridge plug through the intubation pipe. Once the cement is in the wellbore Solidification, it is convenient to lift the oil pipe and intubation pipe, and then drill and mill out the bridge plug and cement in the wellbore, so as to avoid the overhaul accident of "inserting the flagpole";

(2)本发明快钻复合插管桥塞可用于分层压裂管柱，可作为下级封隔器丢手于两层之间，通过插管压裂下层，当压裂上层时，压裂砂沉积于快钻复合插管桥塞以上时，可以拔出插管，轻松钻铣掉桥塞，避免封隔器卡阻事故；(2) The fast-drilling composite intubation bridge plug of the present invention can be used for layered fracturing pipe strings, and can be used as a lower packer between two layers, and the lower layer is fractured through the intubation pipe. When fracturing the upper layer, the fracturing When the sand is deposited on the bridge plug of the quick-drilling composite cannula, the cannula can be pulled out, and the bridge plug can be easily drilled and milled to avoid the jamming accident of the packer;

(3)本发明快钻复合插管桥塞还可用于分层堵水，可采用电缆坐封工具方便坐封于套管内，再将抽油泵下带插管插于桥塞内，从而避免常规整体式管柱靠机械坐封造成管柱弯曲，加剧杆管偏磨问题，也可避免封隔器长期置于井下造成解封困难的问题；(3) The quick-drilling composite intubation bridge plug of the present invention can also be used for layered water blocking, and the cable setting tool can be used to conveniently set in the casing, and then insert the intubation tube under the oil well pump into the bridge plug, thereby avoiding the conventional The integral pipe string is mechanically set to cause the pipe string to bend, which aggravates the problem of eccentric wear of the rod and pipe, and can also avoid the problem of difficult unsealing caused by the long-term placement of the packer downhole;

(4)本发明可广泛应用于油田井下化学堵水施工管柱、分层压裂管柱以及分层堵水管柱等。(4) The present invention can be widely used in oilfield downhole chemical water shutoff construction strings, layered fracturing strings, layered water plugging strings, and the like.

附图说明Description of drawings

图1是本发明快钻复合插管桥塞的结构示意图。图中，1为中心管，2为推力环，3为上卡瓦，4为上卡瓦座，5为边胶筒，6为中胶筒，7为箍环，8为固定销，9为下接头。Fig. 1 is a schematic structural view of the quick-drill composite cannula bridge plug of the present invention. In the figure, 1 is the central tube, 2 is the thrust ring, 3 is the upper slip, 4 is the upper slip seat, 5 is the side rubber tube, 6 is the middle rubber tube, 7 is the hoop, 8 is the fixed pin, and 9 is the Lower connector.

图2是本发明快钻复合插管桥塞中所用插管的结构示意图。Fig. 2 is a schematic structural view of the cannula used in the quick-drilling composite cannula bridge plug of the present invention.

具体实施方式Detailed ways

下面结合附图对本发明作进一步详细描述：Below in conjunction with accompanying drawing, the present invention is described in further detail:

如图1所示，一种快钻复合插管桥塞，包括中心管1、推力环2、上卡瓦3、上卡瓦座4、胶筒组件、下卡瓦座、下卡瓦和下接头9，所述胶筒组件包括边胶筒5、中胶筒6，除胶筒组件采用橡胶材料外，其余材料都采用增强树脂复合材料，如：E玻璃纤维、S-1玻璃纤维、S-3玻璃纤维材料等多种材料均可保证桥塞的可钻性。As shown in Figure 1, a fast-drilling compound intubation bridge plug includes a central tube 1, a thrust ring 2, anupper slip 3, an upper slip seat 4, a rubber cartridge assembly, a lower slip seat, a lower slip and a lower Joint 9, the rubber cartridge assembly includes theside rubber cartridge 5 and the middle rubber cartridge 6. Except that the rubber cartridge assembly is made of rubber material, the rest of the materials are made of reinforced resin composite materials, such as: E glass fiber, S-1 glass fiber, S -3 Various materials such as glass fiber material can ensure the drillability of the bridge plug.

上下卡瓦组件各采用两个箍环7固定后和推力环2、卡瓦座4、胶筒自下而上安装于中心管上，下接头9采用粘胶安装于中心管下端，并配钻安装固定销8固定，固定销8同时采用粘胶防止脱落。The upper and lower slip components are respectively fixed with two hoops 7, and the thrust ring 2, slip seat 4, and rubber tube are installed on the central tube from bottom to top, and the lower joint 9 is installed on the lower end of the central tube with viscose, and equipped with a drill Fixing pin 8 is installed and fixed, and fixing pin 8 adopts viscose to prevent coming off simultaneously.

快钻复合插管桥塞可以采用电缆坐封工具或液压坐封工具实现坐封和丢手，坐封工具的内适配器通过销钉和桥塞中心管1相连，坐封工具的活塞将火药(电缆坐封工具)或者液压(液压坐封工具)力转换成轴向推力，坐封工具的外适配器推动桥塞的推力环2向下运动，推动桥塞的上卡瓦3、上卡瓦座4、胶筒组件和下卡瓦座相对中心管向下运动，上卡瓦3在上卡瓦座4的椎体斜面的作用下、下卡瓦在下卡瓦座的椎体斜面作用下，拉断箍环7，径向向外运动，咬合在套管壁上，实现锚定；上卡瓦3和下卡瓦的单向牙齿只可以沿轴向方向单向运动，不能回退，从而实现自锁功能；胶筒组件在轴向压缩力下径向胀大，贴紧套管壁实现密封。The quick-drilling composite intubation bridge plug can be set and dropped by using a cable setting tool or a hydraulic setting tool. The inner adapter of the setting tool is connected to the center tube 1 of the bridge plug through a pin, and the piston of the setting tool pushes the gunpowder (cable setting tool) or hydraulic (hydraulic setting tool) force is converted into axial thrust, the external adapter of the setting tool pushes the thrust ring 2 of the bridge plug to move downward, and pushes theupper slip 3 and upper slip seat 4 of the bridge plug , the rubber cartridge assembly and the lower slip seat move downward relative to the central tube, theupper slip 3 is broken by the action of the vertebral slope of the upper slip seat 4, and the lower slip is broken by the action of the vertebral body slope of the lower slip seat The hoop 7 moves radially outwards and bites on the casing wall to realize anchoring; the one-way teeth of theupper slip 3 and the lower slip can only move in one direction along the axial direction and cannot be retracted, so as to realize self-locking. Locking function; the rubber cartridge assembly expands radially under axial compression force and clings to the casing wall to achieve sealing.

当坐封力达到预定值后，胶筒组件、上卡瓦3和下卡瓦压缩到位，坐封完成，此时继续压缩，内适配器的销钉剪断，坐封工具和桥塞脱开，实现丢手，起出坐封工具。When the setting force reaches the predetermined value, the rubber cartridge assembly, theupper slip 3 and the lower slip are compressed in place, and the setting is completed. At this time, the compression is continued, the pin of the inner adapter is cut off, the setting tool and the bridge plug are disengaged, and the sealing is realized. Hand, take out the setting tool.

图2是插管的结构示意图，其具体尺寸需和桥塞中心管密封通道配合。所述插管的上部为油管扣，下部有多道密封圈槽。安装上密封圈，用油管下带插管插入桥塞中心管1内，插管通过密封圈和桥塞中心管内壁配合实现密封。桥塞以下流体可通过插管流入或流出。Figure 2 is a schematic diagram of the structure of the cannula, and its specific size needs to match the sealing channel of the central tube of the bridge plug. The upper part of the intubation tube is an oil pipe buckle, and the lower part has multiple sealing ring grooves. Install the upper sealing ring, insert the intubation tube under the oil pipe into the center tube 1 of the bridge plug, and the intubation tube realizes sealing through the cooperation of the sealing ring and the inner wall of the center tube of the bridge plug. Fluid can flow in and out through the cannula below the bridge plug.

化学堵水、注水泥等作业时，一旦化学剂提前凝固，将会造成“插旗杆”的工程事故，即化学剂在油管柱外部凝结，造成无法起出，不得不大修的事故。采用本发明的插管桥塞可以防止“插旗杆”事故，因为当需要释封时，可随时上提拔出插管管柱，然后下牙轮钻头或者平底磨鞋对桥塞钻铣进而钻除桥塞。由于本发明的桥塞全部采用非金属材料，可方便钻铣，从而防止长时间钻铣损坏套管。本发明采用了易钻的树脂复合材料，并配套插管工艺，从而保证了化学堵水、注水泥、防砂等作业的安全。During chemical water plugging, cement injection and other operations, once the chemical agent solidifies in advance, it will cause an engineering accident of "flag pole insertion", that is, the chemical agent condenses outside the tubing string, resulting in an accident that cannot be pulled out and has to be overhauled. The use of the intubation bridge plug of the present invention can prevent the "flag pole" accident, because when the seal needs to be released, the intubation string can be lifted up at any time, and then the lower roller cone bit or flat-bottomed grinding shoe can drill and mill the bridge plug and then drill it out bridge plug. Since all the bridge plugs of the present invention are made of non-metallic materials, drilling and milling can be facilitated, thereby preventing damage to the casing due to long-term drilling and milling. The invention adopts the resin composite material which is easy to drill, and is matched with the intubation process, thereby ensuring the safety of chemical water blocking, cement injection, sand control and other operations.

具体来说，本发明快钻复合插管桥塞主体采用树脂复合材料，可钻性好，有中心通道，配合插管可实现封堵上部，可双向锚定、双向承压(“双向”指桥塞上下两个方向都可以锚定、承压。)，并可配合密封插管实现化堵、分层压裂等特殊工艺，留井部分无金属材料，可钻性强。本发明采用增强复合树脂材料作为桥塞主体，丢手坐封于井下，配合插管用于分层压裂、化堵、分堵工艺，可保证施工管柱的安全性，施工完毕后可方便磨铣钻除，防止造成套管损坏。Specifically, the main body of the fast-drilling composite intubation bridge plug of the present invention is made of resin composite material, which has good drillability, has a central channel, and can be used to seal the upper part with the intubation tube, and can be anchored in two directions and bear pressure in two directions ("two-way" refers to The bridge plug can be anchored and pressure-bearing in both directions up and down.), and can be used with sealed intubation to realize special processes such as plugging, layered fracturing, etc. The part of the well left has no metal materials and has strong drillability. The invention adopts the reinforced composite resin material as the main body of the bridge plug, which is set and sealed underground, and is used for layered fracturing, plugging removal, and separate plugging processes with intubation pipes, which can ensure the safety of the construction pipe string, and can be conveniently installed after the construction is completed. Grinding, milling and drilling to prevent casing damage.

常规封隔器单卡瓦采用双向牙齿也可以实现双向锚定和承压，但需要有内部的自锁机构配合。本发明的桥塞采用了上下两个卡瓦，在实现双向锚定和密封的同时，还实现了自锁功能。具体来说，上卡瓦在座封工具的推动下贴紧套管，一方面向下压缩胶筒实现密封，另一方面单向的牙齿咬合在套管内壁上防止回退，从而实现自锁功能。Conventional packer single slips can also achieve bi-directional anchoring and pressure bearing by using bi-directional teeth, but it needs the cooperation of internal self-locking mechanism. The bridge plug of the present invention adopts two upper and lower slips, and realizes the self-locking function while realizing two-way anchoring and sealing. Specifically, the upper slip is pressed against the casing under the push of the sealing tool, on the one hand, the rubber tube is compressed downward to achieve sealing, and on the other hand, the one-way teeth bite on the inner wall of the casing to prevent retreat, thereby realizing the self-locking function .

综上所述，本发明采用易钻的树脂复合材料保证施工后能够快速钻除，从而避免了常规的铸铁桥塞钻除时容易钻穿套管的风险，另外，本发明在中心管上设计与插管配合密封的通孔，保证了施工后能够安全起出油管，避免了一旦封隔器被凝固无法起出管柱的风险。In summary, the present invention uses an easy-to-drill resin composite material to ensure rapid drilling after construction, thereby avoiding the risk of drilling through the casing when conventional cast iron bridge plugs are drilled. In addition, the present invention is designed on the center pipe The through hole that cooperates with the cannula to seal ensures that the tubing can be pulled out safely after construction, avoiding the risk that the tubing string cannot be pulled out once the packer is solidified.

上述技术方案只是本发明的一种实施方式，对于本领域内的技术人员而言，在本发明公开了应用方法和原理的基础上，很容易做出各种类型的改进或变形，而不仅限于本发明上述具体实施方式所描述的方法，因此前面描述的方式只是优选的，而并不具有限制性的意义。The above-mentioned technical solution is only an embodiment of the present invention. For those skilled in the art, on the basis of the application methods and principles disclosed in the present invention, it is easy to make various types of improvements or deformations, and is not limited to The methods described in the above specific embodiments of the present invention, therefore, the above-described methods are only preferred and not limiting.

Claims (8)

1. the fast combination socket bridge plug that bores, is characterized in that: described fast brill combination socket bridge plug comprises central tube (1) and is sleeved on successively from top to bottom thrust ring (2), upper slips assembly, packing element assembly, lower slips assembly and the lower contact (9) on central tube (1) outer wall;

Described upper slips assembly and described lower slips assembly are oppositely arranged, and described packing element assembly is arranged between described upper slips assembly and lower slips assembly;

Described central tube (1) is for having the tubular structure of axial direction through hole;

In the through hole of described central tube (1), be inserted with sealing intubate.

2. fast brill combination socket bridge plug according to claim 1, it is characterized in that: described packing element assembly adopts elastomeric material, described central tube (1), thrust ring (2), upper slips assembly, lower slips assembly and lower contact (9) all adopt and strengthen resin composite materials.

3. fast brill combination socket bridge plug according to claim 2, is characterized in that: described enhancing resin composite materials adopts E glass fiber, S-1 glass fiber or S-3 glass fiber material.

4. fast brill combination socket bridge plug according to claim 3, is characterized in that: described upper slips assembly comprises upper slips (3) and upper slips seat (4); Described lower slips assembly comprises lower slips and lower slips seat; Described packing element assembly comprises two limit packing elements (5) and is clipped in the middle packing element (6) between two limit packing elements (5);

Upper end at described central tube (1) outer wall is provided with step, the upper surface of described thrust ring (2) is stuck in described step place, the lower surface of described thrust ring (2) contacts with the upper surface of described upper slips (3), the lower end of described upper slips (3) coordinates with the centrum inclined-plane of described upper slips seat (4) upper end, the lower end of described upper slips seat (4) contacts with the upper surface of a limit packing element (5), the upper surface of described lower slips seat contacts with the lower surface of another limit packing element (5), the centrum inclined-plane of described lower slips seat lower end coordinates with the upper end of described lower slips, the lower surface of described lower slips contacts with the upper surface of described lower contact (9).

5. fast brill combination socket bridge plug according to claim 4, is characterized in that: on the external surface of described upper slips (3) and lower slips, be equipped with unidirectional tooth.

6. fast brill combination socket bridge plug according to claim 5, is characterized in that: described upper slips (3) and lower slips are fixed on central tube (1) by two garter springs (7) that are positioned on its external surface respectively.

7. fast brill combination socket bridge plug according to claim 6, is characterized in that: the lower end of central tube (1) is fixed in described lower contact (9) by viscose glue, and by steady pin (8), reinforces fixing.

8. fast brill combination socket bridge plug according to claim 1, is characterized in that: described intubate is tubular structure, and its top is provided with tubing thread, and the external surface of bottom is provided with multiple-sealed ring recess; In described seal groove, sealing ring is housed; Described intubate coordinates realization sealing by the inwall of described sealing ring and described central tube (1).

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